/Engine/Source/Runtime/CoreUObject/Public/UObject/PackageTrailer.h
typedef [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< void([FLinkerSave](API\Runtime\CoreUObject\UObject\FLinkerSave) &LinkerSave, const class [FPackageTrailer](API\Runtime\CoreUObject\UObject\FPackageTrailer) &Trailer)> AdditionalDataCallback